EP 1128027 A3 20020102 - Apparatus for controlling valve timing of internal combustion engine
Title (en)
Apparatus for controlling valve timing of internal combustion engine
Title (de)
Einrichtung zur Ventilzeitsteuerung in einer Brennkraftmaschine
Title (fr)
Dispositif de commande du calage de soupapes d'un moteur à combustion interne
Publication
Application
Priority
JP 2000044708 A 20000222
Abstract (en)
[origin: EP1128027A2] An apparatus controls valve timing of an internal combustion engine that is provided with helical splines (50, 52) of an actuator (24) for varying a phase difference in rotation and an actuator (22a) for varying a cam profile and lift of an intake cam (27). When the apparatus for controlling valve timing and respective actuators are not driven, a valve timing can be automatically established, which can achieve a cold valve overlap θov. Carburetion of fuel can be promoted in the combustion chamber and intake ports by the blow-back of exhaust resulting from the cold valve overlap θov. A mixture is made into a sufficient air-fuel ratio without depending on an increase in fuel when cold idling, wherein combustion is stabilized still more than in a case where valve overlap is not increased, cold hesitation can be prevented from occurring, and drivability can be maintained in a comparatively favorable state. <IMAGE>
IPC 1-7
IPC 8 full level
F02D 13/00 (2006.01); F01L 1/34 (2006.01); F01L 1/344 (2006.01); F01L 13/00 (2006.01); F02D 13/02 (2006.01); F02D 45/00 (2006.01)
CPC (source: EP KR US)
F01L 1/34 (2013.01 - EP US); F01L 1/34406 (2013.01 - EP US); F01L 1/3442 (2013.01 - EP US); F01L 13/0042 (2013.01 - EP US); F02D 13/00 (2013.01 - KR); F01L 2001/34426 (2013.01 - EP US); F01L 2001/34459 (2013.01 - EP US); F01L 2001/34469 (2013.01 - EP US)
Citation (search report)
- [XA] US 5558051 A 19960924 - YOSHIOKA MAMORU [JP]
- [XA] US 5293741 A 19940315 - KASHIYAMA KENJI [JP], et al
- [A] EP 0937865 A1 19990825 - TOYOTA MOTOR CO LTD [JP]
- [A] EP 0915234 A2 19990512 - TOYOTA MOTOR CO LTD [JP]
- [A] US 5893345 A 19990413 - SUGIMOTO KIYOSHI [JP], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1128027 A2 20010829; EP 1128027 A3 20020102; EP 1128027 B1 20050511; DE 60110654 D1 20050616; DE 60110654 T2 20060504; JP 2001234767 A 20010831; JP 4406989 B2 20100203; KR 100669880 B1 20070117; KR 20010083239 A 20010831; US 2001017114 A1 20010830; US 6530351 B2 20030311
DOCDB simple family (application)
EP 01104183 A 20010221; DE 60110654 T 20010221; JP 2000044708 A 20000222; KR 20010008938 A 20010222; US 78526601 A 20010220